<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		
		<a href="javascript:alert('你好呀,嘿嘿!')">链接</a>
		<br>
		<button onclick=alert('我在学js')>按钮1</button>
		
	</body>
</html>
